This hinge mortise bit is made of carbide. It has a 2⅛-inch overall length, 1¼-inch cutter diameter, ¼-inch shank diameter, 29/64-inch cut length, two flutes, and a maximum speed of 18000 RPM. The straight bit cuts all composition materials, plywood, hardwood, and soft wood. It features down shear design and deep center gullets.